Nitrogen fixation by trees in relation to soil nitrogen economy

Dommergues, Yvon

doi:10.1007/978-94-009-1706-4_22

Cited by 10 publications

(16 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Originating from Central America, it has often been described as being able to improve both soil fertility and stability in developing countries (Gutteridge & Shelton 1994). It has been also classified among four species recognized as having a high symbiotic nitrogen-fixing potential (Dommergues 1995). Moreover, it provides excellent fodder and abundant litter which is easily broken down by soil microbes.…”

Section: Introductionmentioning

confidence: 99%

Diversity and effectiveness of rhizobial strains from Gliricidia sepium native to Reunion Island, Kenya and New Caledonia

Thiao

Neyra

Isidore³

et al. 2004

World J Microbiol Biotechnol

View full text Add to dashboard Cite

The aim of this study was to use several approaches to assess the diversity occuring in a collection of rhizobial strains that had been isolated from Gliricidia sepium (Jacq.) Walp. originating from Kenya, Reunion Island and New Caledonia. Results showed that G. sepium establishes an effective symbiosis only with fast-growing rhizobia. This suggests that this legume nodulates preferentially with this type of rhizobia, although ineffective nodules were observed on root systems of plants inoculated with slow-growing rhizobia. It was possible to distinguish several groups of strains which have the same behaviour in terms of utilization of amino acids and sources of carbon and intrinsic resistance to antibiotics and salinity. Six molecular groups were distinguished by profiles obtained using PCR/RFLP techniques. No relationship was demonstrated between phenotypic groups and molecular groups. Neither was it possible to find a relationship between the geographic origins of the strains and their distribution in the several phenotypic and/or molecular groups. In an experiment carried out under glasshouse conditions, we observed that all strains from the collection significantly improved the growth of G. sepium cultivated in a substrate totally devoid of nitrogen. The strain GsK5 induced the greatest stimulation of plant growth.

show abstract

Section: Introductionmentioning

confidence: 99%

Diversity and effectiveness of rhizobial strains from Gliricidia sepium native to Reunion Island, Kenya and New Caledonia

Thiao

Neyra

Isidore³

et al. 2004

World J Microbiol Biotechnol

View full text Add to dashboard Cite

show abstract

“…There is increasing evidence that NFTs may significantly contribute to the nitrogen nutrition of agricultural crops, as fixed N from the trees is being recycled through litter and root turnover (Dommergues and Subba Rao 2000). However, Dommergues (1995) and Brockwell et al (2005) state that the nitrogen-fixing potential (NFP) of A. nilotica is still not clearly quantified. In the past, it was assumed that A. nilotica was strictly nodulated by strains of the genus Rhizobium (Dreyfus and Dommergues 1981).…”

mentioning

confidence: 98%

“…It forms symbiotic associations with strains of at least six genera of root-nodule bacteria (rhizobia) that are widely distributed (Dommergues et al 1999;Doran and Turnbull 1997;Brockwell et al 2005). Many of these associations fix nitrogen (N) from the atmosphere, but there is a great variation in nitrogen-fixing specificity in both hosts and bacteria (Dommergues 1995).…”

mentioning

confidence: 99%

Soil bio-functioning under Acacia nilotica var. tomentosa protected forest along the Senegal River

Faye

Sall²,

Chotte

et al. 2007

Nutr Cycl Agroecosyst

View full text Add to dashboard Cite

Acacia nilotica var. tomentosa trees from the Diarra protected forest located in the Senegal River valley were identified for the assessment of both biological nitrogen fixation, using the natural abundance method, and soil bio-functioning parameters (nodulation, root biomass, total microbial biomass, and potential N mineralization). The presence and the genetic diversity of indigenous rhizobia nodulating A. nilotica var. tomentosa was also investigated, taking into account distance from the trunk (0, 1, 2, and 3 m) and depth (0-25, 25-50, and 50-75 cm).

show abstract

“…Percentage of N 2 -fixation in Casuarina species ranges from 15 to 80% of N derived from atmospheric (% Ndfa) (Sougoufara et al 1989;Sanginga et al 1990;Subba-Rao and Rodriguez-Barrueco 1995), comparable to leguminous plants (Mariotti et al 1992;Dommergues 1995;Parrotta et al 1999;Swensen 1996;Sprent and Parsons 2000). Along with Acacia spp.…”

mentioning

confidence: 97%

Frankia Nodulation, Mycorrhization and Interactions Between Frankia and Mycorrhizal Fungi in Casuarina Plants

Critchley

2008

Mycorrhiza

View full text Add to dashboard Cite

Nitrogen fixation by trees in relation to soil nitrogen economy

Cited by 10 publications

References 57 publications

Diversity and effectiveness of rhizobial strains from Gliricidia sepium native to Reunion Island, Kenya and New Caledonia

Diversity and effectiveness of rhizobial strains from Gliricidia sepium native to Reunion Island, Kenya and New Caledonia

Soil bio-functioning under Acacia nilotica var. tomentosa protected forest along the Senegal River

Frankia Nodulation, Mycorrhization and Interactions Between Frankia and Mycorrhizal Fungi in Casuarina Plants

Contact Info

Product

Resources

About